US Bridges

Mission RD over Medium Wash

Good

Pima County, Arizona · 0.5 MI N Twin Buttes RD · Structure no. 10090

Built
1996
29 years old
Condition
Good
inspected November 2023
Type
Culvert
Concrete Continuous
Length
57 ft
5 main spans
Daily traffic
507
2022 count
Owner
County
County Highway Agency

About this bridge

Mission RD over Medium Wash is a concrete continuous culvert carrying Mission RD over Medium Wash in Pima County, Arizona. It was built in 1996, so it is 29 years old, younger than the Arizona average of 47.8 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 507 vehicles a day, roughly 1% of them trucks, projected to reach 517 by 2042. The structure is 57 ft (17.4 m) long.

Location

Open in Google Maps
CarriesMission RD
CrossesMedium Wash
Location0.5 MI N Twin Buttes RD
RouteCounty Highway 0
CountyPima County
StateArizona
Coordinates31.93163, -111.06148
Functional classRural Major Collector

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert7 GoodSome minor problems.
Last inspectionNovember 2023
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating64 US tons
Inventory rating38 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckNot applicable
Main spans5
Design loadHS 20
Structure length57 ft (17.4 m)
Longest span10 ft (3 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic507 (2022)
Projected traffic517 by 2042
Trucks1%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed—
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Mission RD over Medium Wash built?

It was built in 1996, making it 29 years old in 2025.

What condition is Mission RD over Medium Wash in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in November 2023.

How much traffic does Mission RD over Medium Wash carry?

About 507 vehicles per day (2022 count), of which roughly 1% are trucks.

How long is Mission RD over Medium Wash?

The structure is 57 ft (17.4 m) long with a longest span of 10 ft (3 m).

Who owns Mission RD over Medium Wash?

It is owned by the County Highway Agency.